Bag



Patented .lune 15, 1926*. I

UNETED ST'IESv PATENT oF f annui/rsa M. BATES', or CHICAGO, ILLINo1s, Ass1GNo-n To BATES VALVE BAG- CoM- 1,588,646 FICE.

PANY, 0F CHICAGO, ILLINOIS, A CORiPRATION OF WEST VIRGINIA.`

BAG.

.Application filed May 2, 1925. SerialNo. 27,338.

. My invention relates'to bags produced from a continuous tube of bag materiall and closed at the ends by seams; and has particular referenceto bags of such material orv size 'as to make important a hem yor fold in' connection with the end seam.

My invention isv diagrammatically illus'- trated in the accompanying drawings,I wherein Fig. 1 is a diagrammatic elevation of ap- 'aratus which may be used in producing my ag; Fig. 2 is an' elevation of the tube rom which the bag is formed; Fig. 3 is an elevation 4similar to Fig. 2 but showing in partial l section folds formed the tube; Fig. 4 is an enlarged detail side view of parts showing a.

filled bag w-ithv its ends closed; Fig. 5 .is a .front view of. parts shown in Fig. 4; Fig.

nently fastened together by-.a seam-'forming device C, sol as to 'form a tube D from which bags may be made. The tube/ is turned to bring the seam inside by drawing it down through the inside of the form tubev B and outside of a filling tube B, through which successive charges of material may be fed into thetube.

After a charge has been fed into the tube, folds E and F are formedin the tube above the charge. These folds may take any suitable form, such as the inward telescoping folds of Figs. .1, 3, 4 and 5, or the outward tclescoping fold of Fig. 3a, or the folds shown in Fig. l.

In making the folds shown in Figs. l, 3, 4 and 5,' the folds E and F` are connected by -an inner tube portion' G, which extends across the space II between the folds. In Fig. l there is shown diagrammatically a sewing machine L having needles M,` M adapted to sew seams K, K through folds E, F, and having 'a' cutter N. adapted to sever the connecting portion G'of the tube along line N, the cutter passing through the space Hbetween the-folds.

l In Fig. la folds E', F are shown which are made' by foldingboth walls of the tube on the side towards theneedle, so that the connecting portion G is on that side of the This kind of fold 1s sometimeseasiertube. to formth'an the telescOpe fold. In the usual form of sewed seam K', K! there is more thread` on the` side away from the needles than on the side towards the-needles, so that it is preferable to have the folds on. the side towards the needles when'ythey are formed on one side only.

In Fig. 3a folds E2, F2 are shown'which 'are madefin the same way as folds E and F except that they are folded outward; instead of inward so that connecting portion Gr42 .is on the outside instead of being on the inside like connecting portion G.

The telescoping folds are symmetrical folds which strengthen both sides alike, and are desirable for that reason; butthe most important feature of the folds is that they be so made that-*they can be formed in al tube before the tube is severed. It is noted that, in each of the folds shown, the fabric doubles back upon itself and then continues in the same direction a before, resulting in the fold of each layer of fabric being substantially Z shaped in cross-section,and the severededges'extend yas far as', or a little beyond, the folds at vthe ends of thebags,

where the fabric is cut between the bags. ,y

()neinethod of making the fabric into atube and one way of filling charges into the tube,

is shown, but it is not material how the tube 5 isformed, and any suitable method may-be used for filling the bags. I contemplate particularly making filled hemmed bags, but in the case .of valve bags,or bags intended to be filled through a small aperture, the folds could be sewed at both ends of the bag while the bagwas still empty, leaving it for a subsequent operation to insert a filling tube between the folds, or elsewhere, and thus fill the bag.

I claim: 1

1. A bag comprising a body, the end section of the body being inwardly telescoped, and a seam facross the end of the body through the telescoped portion, the edges of the bag projecting beyond said telescoped portion.

2. .A bag comprising a body portion, the ends of said body being telescoped inwardly, and seams across the ends of the bag through such telescoped portions, the edges of the bag projecting beyond said telescoped portions. I

3. A bag comprising a body, the end sec'- A tion of the body being telescoped, and a seam scoped portion, the edges of the bag projectsuch telescoped portions, the edges of the bag.

projecting beyond said telescoped portions. 5. A bag made from a bag-tube, comprising a bag portion, the bag tube being tele- Ascoped to form double folds at the ends Aof the bag, and sealns across the ends of the bag through such telescoped portions, the

bag-tube being severed adjacent the end of the bag.

6. A bag made from asection severed from a bag-tube, the bag-tube being folded at the ends of the bag, and seams across the ends ol" the bag through such folded portions, and the severed edges of the bag projecting at the ends of the bag beyond said folds.

7. A bag made from a section severed from a. bag-tube,v the bagetube being folded at' the end of the bag so that the `fabric returns' upon itself and forms a fold substantially Z shaped in cross-section, and a sea-rn across the end of the bag through such folded portion.

In testimony whereof I have hereunto signed my naine to this specification.

` ADELMER M. BATES. 

